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Climate change is erasing previous gains in air quality — fires are mostly to blame


It’s getting harder to stop pollution in a warming world.

“Air quality really highlights how the changing climate is being felt by individuals,” says Jeremy Porter, lead author of the report published by the nonprofit research organization First Street Foundation. The group’s latest work shows that around 10 percent of properties in the US (roughly 14.3 million) already have to cope with a week or more of days when air quality is considered “unhealthy” due to fine particle pollution, also called soot. “The job of somebody like an air quality regulator is changing because it used to be 100 percent of your attention would be on emissions from human activities — so you’d worry about power plants, and industry, and motor vehicles,” Shindell says.

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